Mower steering column



FIG. 1 is a left side elevational view of a riding mower, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a rear view thereof.

The broken line showing of the mower is for illustrative purposes only, and forms no part of the claimed design.

FIGS. 2-5 are shown on an enlarged scale. 

The ornamental design for a mower steering column, as shown and described. 